{ "title": "HiPOD", "metadata": { "thumbnailURL": "bundle://header.jpg", "excerpt": "This lonely little crater has defied attempts at relentless erosion." }, "version": "1.5", "identifier": "ESP_055338_1865", "language": "en", "layout": { "columns": 10, "width": 1024, "margin": 85, "gutter": 20 }, "documentStyle": { "backgroundColor": "#faf7f2" }, "components": [ { "role": "heading1", "layout": "heading1Layout", "text": "HiPOD: FRIDAY, 25 OCTOBER 2019" }, { "role": "divider", "layout": "bigDividerLayout", "stroke": { "width": 3, "color": "#8c2028" } }, { "role": "title", "layout": "halfMarginBelowLayout", "text": "A Pedestal Crater in Amazonis Planitia" }, { "role": "photo", "layout": "fullBleedLayout", "caption": "A cutout featuring the pedestal crater that, while it has undergone erosion, has remained standing above the terrain. (NASA/JPL/University of Arizona)", "URL": "bundle://ESP_055338_1865-main.jpg" }, { "role": "body", "format": "html", "layout": "hipodMarginLayout", "text": "


The title may be a bit prosaic, but the starkness of this crater alone on the terrain can more than make up for that. A pedestal crater is one where the ejecta blanket (the material is that thrown out at impact and then settles back down around it) is made of material that proves to be more resistant to erosion than the surrounding terrain. Over perhaps millennia, erosion works on that terrain but the crater and its blanket wind up appearing “on top” of the ground, i.e., looking like a pedestal.

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Amazonis Planitia is one of the smoothest plains on Mars, probably about 100 million years old. It also gives its name to an entire Martian epoch, dating back 3 billion years ago.

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NASA/JPL/University of Arizona

ID: ESP_055338_1865
date: 17 May 2018
altitude: 275 km

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